Method for preparing nanometer copper-sulfur compounds with controllable morphologies based on chemical vapor deposition method

A chemical vapor deposition, copper-sulfur compound technology, applied in copper sulfide, nanotechnology and other directions to achieve the effect of promoting development

Inactive Publication Date: 2012-07-18
FUDAN UNIV
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Problems solved by technology

However, there is still no method that can easily realize the separation of copper-sulfur compounds with different morp

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  • Method for preparing nanometer copper-sulfur compounds with controllable morphologies based on chemical vapor deposition method
  • Method for preparing nanometer copper-sulfur compounds with controllable morphologies based on chemical vapor deposition method
  • Method for preparing nanometer copper-sulfur compounds with controllable morphologies based on chemical vapor deposition method

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Embodiment Construction

[0018] The invention discloses a method for preparing a copper-sulfur compound with controllable morphology based on a chemical vapor deposition method, which includes three parts: a reaction precursor sampling method, system pressure control, and system temperature regulation.

[0019] ①Injection of reaction precursors: solid or liquid reaction precursors are placed in a quartz boat, and the position of the quartz boat in the reaction zone can be adjusted arbitrarily; The inlet of the gas, the airflow velocity and the inlet time, etc.

[0020] ②System pressure control: The system pressure can be controlled between low pressure and high pressure. The low pressure is conducive to the cleaning of the reaction system and the timely extraction of the reactants, and the regulation of medium and high pressure is conducive to the regulation of product morphology.

[0021] ③System temperature control: The temperature of the reaction zone and the reaction product can be precisely cont...

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Abstract

The invention belongs to the technical field of the preparation of the semiconductor material and particularly discloses a method for preparing copper-sulfur compound nano-crystals with controllable morphology based on a chemical vapor deposition method. The method adopts the chemical vapor deposition method, the temperature and pressure of the reaction system and the product collection area are controlled to prepare different morphologies of copper-sulfur compounds such as copper sulfide nano-crystals, copper sulfide nano-rods, copper sulfide nano-sheets and copper sulfide nano-flower-cluster. The method comprises the following specific steps: (1) injecting a solid precursor; (2) controlling the pressure and temperature of the system and injecting a gaseous precursor; and (3) collecting the product. The copper-sulfur compounds prepared by the method are characterized by good monodispersity, high sample purity and the like. The method can also be used to prepare other metal semiconductors such as sulfides, selenides and tellurides; and by changing the reaction conditions of the system, the morphology of the product is regulated and then applied in fields such as the preparation of functional semiconductor elements, photoelectric conversion and catalysis.

Description

technical field [0001] The invention belongs to the technical field of semiconductor material preparation, and in particular relates to a method for preparing a shape-controllable nanometer copper-sulfur compound. Background technique [0002] Copper-sulfur compounds are an important class of indirect bandgap p-type semiconductor materials, and their forbidden bandwidth is between 1.2–2.2eV at room temperature, which changes with the copper-sulfur ratio. Nano-copper-sulfur compounds have optical properties such as visible light absorption, infrared transmission, photoluminescence, and large nonlinear polarizability, and are favored in the fields of solar cells, new photocontrol devices, photocatalysts, and photoelectrodes. At the same time, it has the characteristics of high electrical conductivity and high capacitance, so it is an excellent cathode material in lithium-ion batteries. In addition, nano-copper-sulfur compounds can also be used as good low-temperature supercon...

Claims

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Application Information

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IPC IPC(8): C01G3/12B82Y40/00
Inventor 郑耿锋胥明吴昊宇
Owner FUDAN UNIV
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